Assessable value must include the value of caps fitted to tubes even if manufacturers do not separately charge for them. The Board clarifies that the assessable value of tubes must include the value of plastic caps fitted to them even if manufacturers do not levy a separate charge for those caps, applying the principle that assessable value comprises the entire intrinsic value of the article as reflected in Union of India v. Metal Box Co. of India Ltd. Field formations are directed to inform officers and secure acknowledgements of the circular to ensure consistent valuation practice.